Kastra vs Outside Agent

Control what your AI is allowed to do. Sub-millisecond authorization for every prompt, tool call, shell command, and API request.

Build AI agents that interact with the outside world.

About Kastra

Control what your AI is allowed to do. Sub-millisecond authorization for every prompt, tool call, shell command, and API request. Before an action runs, Kastra evaluates attribute-based policy in under one millisecond and returns allow, deny, redact, or hold. Recorded decisions form a cryptographically chained audit trail so operators, auditors, and agents can explain why something was permitted. Use the Kastra HTTP API from production agents, install Kastra Edge on developer machines to govern Claude Code, Cursor, and Codex, or connect an MCP client to read governance data.

About Outside Agent

Build AI agents that interact with the outside world. Give your AI agent a phone number, memory, and the tools to text, call, take action, and hand off to your team when needed. Agent action Start client intake Give the client space to explain . Agent Your timeline, people, and documents are ready for legal review. One URL from your console connects any editor, Claude Code, Codex, Cursor, VS Code, and more. Your coding agent builds, tests, and publishes it, then your customers talk to it on web, SMS, or voice.